97 670 with twin pipes jetting

Summit97 · Sep 3, 2012

Going to put a set of Crankshop twin pipes on my 97 670 Summit (Non HO) I'm going to take off the HAC so what I need to know is what jetting should I be at here in Mn? I heard at one time you could get a jetting chart from Crankshop can you still? I'm at 1700' Elev. but I want jetting all the way up to 10,000' Thanks!!!

Summit97

BIG JOHN · Sep 3, 2012

please dont...and this is from years of experience...those pipes make 3 hp more than stock at 8350 rpm (with a 501 valve) and everywere else is LESS than stock and PITA to jet...the only mod should be more compression/trail porting the cylinders = 10+ hp all the way thru power band...BJ

Summit97 · Sep 3, 2012

Thanks

Thanks Big John. I just put the sled together for my step-son. I'm not looking for HP. A buddy just had them laying around. I just want the jetting so I have a place to start. Thanks

Summit97

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97 670 with twin pipes jetting

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